Published August 19, 2013 | Version v1
Journal article Metadata-only

Two-dimensional electron gas in a modulation-doped SrTiO3/Sr(Ti, Zr)O3 heterostructure

Creators

  • 1. Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)
  • 2. Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)

Description

A two-dimensional electron gas (2DEG) in SrTiO3 is created via modulation doping by interfacing undoped SrTiO3 with a wider-band-gap material, SrTi1−xZrxO3, which is doped n-type with La. All layers are grown using hybrid molecular beam epitaxy. Using magnetoresistance measurements, we show that electrons are transferred into the SrTiO3, and a 2DEG is formed. In particular, Shubnikov-de Haas oscillations are shown to depend only on the perpendicular magnetic field. Experimental Shubnikov-de Haas oscillations are compared with calculations that assume multiple occupied subbands

Additional details

Identifiers

DOI
10.1063/1.4819203;
arXiv
arXiv:1307.4361v2;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
103
Journal Issue
8
Journal Page Range
p. 082120-082120.4
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45039100
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
COMPARATIVE EVALUATIONS; DOPED MATERIALS; ELECTRON GAS; ELECTRONS; LANTHANUM; LAYERS; MAGNETIC FIELDS; MAGNETORESISTANCE; MODULATION; MOLECULAR BEAM EPITAXY; OSCILLATIONS; OZONE; SEMICONDUCTOR MATERIALS; SHUBNIKOV-DE HAAS EFFECT; STRONTIUM TITANATES; THIN FILMS; TWO-DIMENSIONAL CALCULATIONS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CRYSTAL GROWTH METHODS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; ELEMENTS; EPITAXY; EVALUATION; FERMIONS; FILMS; LEPTONS; MATERIALS; METALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTHS; STRONTIUM COMPOUNDS; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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